57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
/*
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* Copyright (C) 2024 The LineageOS Project
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define LOG_TAG "SensorNotifierUtils"
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#include "SensorNotifierUtils.h"
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#include <android-base/logging.h>
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bool readBool(int fd) {
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char c;
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int rc;
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rc = lseek(fd, 0, SEEK_SET);
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if (rc) {
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LOG(ERROR) << "failed to seek fd, err: " << rc;
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return false;
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}
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rc = read(fd, &c, sizeof(char));
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if (rc != 1) {
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LOG(ERROR) << "failed to read bool from fd, err: " << rc;
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return false;
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}
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return c != '0';
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}
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disp_event_resp* parseDispEvent(int fd) {
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disp_event header;
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ssize_t headerSize = read(fd, &header, sizeof(header));
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if (headerSize < sizeof(header)) {
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LOG(ERROR) << "unexpected display event header size: " << headerSize;
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return nullptr;
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}
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struct disp_event_resp* response =
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reinterpret_cast<struct disp_event_resp*>(malloc(header.length));
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response->base = header;
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int dataLength = response->base.length - sizeof(response->base);
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if (dataLength < 0) {
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LOG(ERROR) << "invalid data length: " << response->base.length;
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return nullptr;
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}
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ssize_t dataSize = read(fd, &response->data, dataLength);
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if (dataSize < dataLength) {
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LOG(ERROR) << "unexpected display event data size: " << dataSize;
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return nullptr;
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}
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return response;
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}
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